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56 Ba Barium (plaintext) |
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H He |
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Li Be B C N O F Ne |
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Na Mg Al Si P S Cl Ar |
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K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr |
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Rb Sr Y Zr Nb Mo Tc Ru Rh Pd Ag Cd In Sn Sb Te I Xe |
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Cs[Ba]La Hf Ta W Re Os Ir Pt Au Hg Tl Pb Bi Po At Rn |
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Fr Ra Ac Rf Db Sg Bh Hs Mt Ds Rg Cn Nh Fl Mc Lv Ts Og |
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Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb Lu |
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Th Pa U Np Pu Am Cm Bk Cf Es Fm Md No Lr |
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| 56 ____ | |
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| | __ ) __ _ | |
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| | _ \ / _` | | |
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| | |_) | (_| | | |
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| |____/ \__,_| | |
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| | |
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| Barium | |
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| 137.33 u | |
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Wiki Article: Barium |
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Electron Configuration: [Xe]6s2 |
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Electronegativity: 0.89 |
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Atomic Radius: 268 pm |
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Ionization Energy: 5.212 eV |
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Electron Affinity: |
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Oxidation States: 2 |
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Standard State: Solid |
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Melting Point: 1000 K |
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Boiling Point: 2170 K |
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Density: 3.62 g/cm3 |
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Family: Alkaline earth metal |
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Year Discovered: 1808 |
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Number of Neutrons: 81 |
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Number of Protons: 56 |
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Number of Electrons: 56 |
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Number of Valence: 2 |
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Valency: 2 |
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Group: 2 |
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Period: 6 |
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Shell: s-shell |
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Specific Heat: 0.204 J/g K |
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Radioactive: 0 |
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Occurrence: Natural |
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Source: Dying low-mass stars |
